droplang(1) PostgreSQL 9.6.6 Documentation droplang(1)
NAME
droplang - remove a PostgreSQL procedural language
SYNOPSIS
droplang [connection-option...] langname [dbname]
droplang [connection-option...] --list | -l [dbname]
DESCRIPTION
droplang is a utility for removing an existing procedural language from
a PostgreSQL database.
droplang is just a wrapper around the DROP EXTENSION
(DROP_EXTENSION(7)) SQL command.
Caution
droplang is deprecated and may be removed in a future PostgreSQL
release. Direct use of the DROP EXTENSION command is recommended
instead.
OPTIONS
droplang accepts the following command line arguments:
langname
Specifies the name of the procedural language to be removed. (This
name is lower-cased.)
[-d] dbname
[--dbname=]dbname
Specifies from which database the language should be removed. The
default is to use the database with the same name as the current
system user.
-e
--echo
Display SQL commands as they are executed.
-l
--list
Show a list of already installed languages in the target database.
-V
--version
Print the droplang version and exit.
-?
--help
Show help about droplang command line arguments, and exit.
droplang also accepts the following command line arguments for
connection parameters:
-h host
--host=host
Specifies the host name of the machine on which the server is
running. If host begins with a slash, it is used as the directory
for the Unix domain socket.
-p port
--port=port
Specifies the Internet TCP/IP port or local Unix domain socket file
extension on which the server is listening for connections.
-U username
--username=username
User name to connect as.
-w
--no-password
Never issue a password prompt. If the server requires password
authentication and a password is not available by other means such
as a .pgpass file, the connection attempt will fail. This option
can be useful in batch jobs and scripts where no user is present to
enter a password.
-W
--password
Force droplang to prompt for a password before connecting to a
database.
This option is never essential, since droplang will automatically
prompt for a password if the server demands password
authentication. However, droplang will waste a connection attempt
finding out that the server wants a password. In some cases it is
worth typing -W to avoid the extra connection attempt.
ENVIRONMENT
PGDATABASE
PGHOST
PGPORT
PGUSER
Default connection parameters
This utility, like most other PostgreSQL utilities, also uses the
environment variables supported by libpq (see Section 32.14,
"Environment Variables", in the documentation).
DIAGNOSTICS
Most error messages are self-explanatory. If not, run droplang with the
--echo option and see under the respective SQL command for details.
Also, any default connection settings and environment variables used by
the libpq front-end library will apply.
NOTES
Use createlang(1) to add a language.
EXAMPLES
To remove the language pltcl:
$ droplang pltcl dbname
SEE ALSO
createlang(1), DROP EXTENSION (DROP_EXTENSION(7)), DROP LANGUAGE
(DROP_LANGUAGE(7))
PostgreSQL 9.6.6 2017 droplang(1)
PostgreSQL 9.6.6 - Generated Fri Dec 1 07:48:29 CST 2017